What's with all of the anger? His piece is a long-winded, hyperbolic, boreathon but at it's centre is a man who had a very unhappy childhood and desperately wants the opposite for his children. If he says his childhood was unhappy then why not believe him? Especially when what he is saying is concurrent with what psychological and neurological evidence we have about child-rearing. It doesn't mean he dislikes his mother as adult company or believes she didn't love him and his sister but the way he grew up does actually sound pretty grim.
He's also not claiming to be the best parent ever, he's saying that in his experience, modern parents tend to be better parents than their parents. The main mistake he is making there is to think that his 70s/80s childhood was typical of every other child of that era. My parents are babyboomers and were on the whole fantastic parents. My mum was a stay at home mum and my dad drove a bin lorry so we had very little money but we had all their time and love. My mum is fantastic with money, so we never did without anything we needed and had a lot that we wanted, including them buying a rundown old house in a lovely area so we could grow up in a safe neighbourhood. My dad is also very inventive and used to bring home other people's rubbish and recycle it into new stuff for us, so our big garden was full of fantastic play items, like a two story tree-house with a wrap around balcony and amazing swing off the side. Little means more to me than looking back and seeing how much of what Santa brought for me was hand made/restored. The thought of my parents spending December working away in the shed or at the table after we were in bed, making our Christmas gifts just stuns me. And they weren't alone in parenting like that, in that era.